Final answer:
The claim that an ORI valve is used for head pressure control is incorrect; these valves are typically closed-on-rise of inlet pressure and are designed to maintain a specified pressure in refrigeration systems.
Step-by-step explanation:
The statement that an open-on-rise of inlet pressure (ORI) valve is used for head pressure control is false. These valves typically operate in reverse, meaning they are closed-on-rise of inlet pressure and are used to maintain a constant pressure in refrigeration systems as the ambient temperature changes. The ORI valve doesn't increase head pressure, but rather prevents it from falling below a certain level.
In contrast, the examples provided from Figure 12.5 describe various entrainment devices such as Bunsen burners, atomizers, aspirators, and water heater chimneys, which use fluid speed and pressure differential to mix or move fluids for different applications, but these do not directly relate to the function of an ORI valve in head pressure control.